6-Amino-3-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetic acid
3-Amino-4-(bromomethyl)-2-(difluoromethyl)pyridine-5-methanol
3-Amino-2-(bromomethyl)-5-(difluoromethyl)pyridine-6-methanol
3-Amino-2-(bromomethyl)-4-(difluoromethyl)pyridine-5-methanol